Improved machine for cutting up fat



MILLER & Mc'INTIRE.

Machine for Cutting up Fat.

' N. PETERS. Pllolo-Lilhwmpher. Wnhinglnn. D. C.

Patented March 15, 18641;

' tion, takenat the liney y, Fig. 1. Fig. 5 is a UNITED STATES FREDERICK MILLER AND PATENT DFFIGE..

J. N. MOINTIRE, on NEW YORK, not, ASSIGNORS TO FREDERICK MILLER.

IMPROVED MACHINE FOR CUTTING UP FAT.

Specification forming part of Letters Patent No 4 L963, dated March 1 1864.

To all whom it may concern: I

Be it known that we, FREDERICK MILLER and J. N. MOINTIRE, of New York, county of New York, in the State of New York, have invented certain new and useful Improvements in Machines for Cutting Up Fat, to make lard, 8w. and we do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawings, making part of this application.

Our invention relates to a novel machine by means of which we are enabled to take the large pieces of fat cut off in cutting up hogs, &c., and by an automatic mechanism out these large pieces up into small bits of about the same average size and suitable to'go to the rende'ring-kettlefor the manufacture of lard. 'Our automatic fat-cutting machine has for its objects to cut up into small pieces of about the same size the large and variously sized and shaped pieces of fat cut from hogs, (or other animals,) and to do this rapidly with an economical expenditure of power; and to these ends our invention consists in the severaldevices and combinations hereinafter described and claimed, constituting our improved machine.

To enable those skilled in'the art to which our invention pertains to make and use our invention, we will proceed v to describe the construction and operation of one of our improved machines, referring by letters to the accompanying drawings, forming part of this application, and in which Figure 1 is an elevation of one of our improved machines. Fig. 2 is a vertical section at the line 2 z of Fig. 1. Fig. 3is an end view. Fig. 4 is a detail view on an increased scale, showing one of the cutter-cylinders in seedetail sectionalyiew Qf cutter-cylinder, taken at the line w 00, Fig. 4.

The tinted portions are those surfaces which come in the plane of the section.

In the several figures the same letter of reference indicates the same part of the machine. and B are two cutter-cylinders,which are mounted on suitable shafts or journals, f f, hung in bearings formed in the frame F of the machine. This frame E may be made of the contact with the knives of the cutter-cylinders A B. (See Fig. 2.) The cuttercylinders are formed of a metallic cylinder, A, (see Figs. 4, 5,) on the face or periphery of which are secured numerous knives, at. These knives a are arranged radially, in cross-section, equi distant, and are made longitudinally of a spi- I ral or helically-curved shape, (see Fig. 1,) the directions of their twist or curvature being different on the two cylinders A and B-that is, running in different directions(see Fig. 1,) the object of which will be presently explained. In the spaces between the knives a a are arranged plates m, which are provided with lugs or pins 0 on their sides adjacent to the cylinder A. The pins 0 pass through holes in the said cylinder, and have arranged around them spiral springs s, which exert a constant tendency to retain the plates at in contact with the exterior of the cylinder A.'

(See Fig. 4.) On theshaft f (which remains stationary in its bearings)- is arranged and secured a hollow shaft or sleeve, P, which is formed with a helical cam-projection, P, and on this hollow shaft P the cylinder. A is mounted so as to turn freely, one end coming against a collar, t, on the shaft f, and the other being formed with a neck or journal, W, (see Fig. 5,) on which is keyed the pinion which drives it.

As the cylinder A rotates on the shafts f and P theinner projecting ends of the pins 0 come successively into contact with the cam P, and are forced outward, (against the pressure of the springs s, which return them to their normal position afterthey-pass the cam,)

as clearly illustrated at Fig. 4, until they GaTISEh- A.

the plates m to come about even with the extremities or edges of the knives a a. The cam P is so arranged relatively to the rolls 0 and D and to the rotation of the cutter-cylinder as that the plates at shall commence to move outward just as the knife next above the plate is leaving the roll 0, (or D,) and the objects of these moving plates 11?. is to force out the strips or pieces of fat between theknives, and which (in cold weather, when the fat is stiff) might wedge in and clog the machine.

We have described the construction and operation of the several parts of one of the cylindersA B and it will be understood that the two are duplicates except in the direction of the twist of their knives, and this difierence we will now explain, and the object of it.

It will be understood that the large pieces of fat to" be cut up are put onto the feed-board G, (or into a hopper so as to pass tothe cutters,) from whence they pass down to and are carried in between the cutter-cylinder 'A and.

i the roll 0. Now, since'the knives a of cylinder A run spirally, (so as to make a shearing cut,) it follows that if a large slab of fat passes down and is cut by this first set of cutters it will sometimes be cut and discharged in the form of a long narrow strip, (equal in width to the space between the knives,) and it is also clear that this strip, owing to the curvature of the cutters, will be discharged with one end considerably in advance of the other.

Now,the next set of cutters, it will be seen, will commence to cut this lower end first, and their curvature being the reverse of the preceding set of cutters, it is obvious thatj-the strip discharged from the first set of cutters will becut into small pieces by the second set.

We havealready explained the operation and object of the automatic clearers m. These plates force the pieces of fat between the outi ters or knives outward to their extreme edges.

Now, to prevent thepossibility of the fat being carried around with the plates m by stickinto any suitable receptacle. We have shown the machine arranged on a fioor, (or platfo'rm,) F; but it may be located as deemed most. expedient and convenient. The cylinder A is driven by a pinion, K, and and the cylinder B by a pinion, M, (see Fig.

. 1,) and these two pinions derive motion as follows, viz: On the projecting end of the lower shaft f is hung (so asto turn thereon) a large gear and fly Wheel: which maybe turned latter, as described.

from the frame E, and which gear L drives the pinion M.

At Fig. 3, for thepurpose of more clearly illustrating, we have shownthe several gears by red lines, denoting their pitch-circles, andv the cutter-cylinders and their respective rolls 0 D by blue circles, denoting their extreme circumferences. The arrows indicate the directions of motion of the several parts.

From what has already been said the general operation of the machine will be understood to be as follows, viz: The large pieces of fat are supplied to the table G, from whence they pass down between A and G, and from thence through B and D, and are discharged, all finely cut up, through the conduit H.

It will be understood that our invention is subject to very many changes inform and pro.- portion and in the detail construction of ,the machine without departing from its spirit.

Having fully described the construction and operation of our improved-machine, what we claim therein as new, and desire to secure by Letters Patent; is

l. The employment of :the cutter-cylinder A with its knives a, the roll 0, and the cutter cylinder B with itsi knilves a and roll 1), the whole, arranged andoperating as described."

2. The employment, .in combination .with' a cutting-cylinder, of .the clearingplates m, arranged to operate as and for the purposes described. 1

3. The arrangement of the lower cutter-cyh inder'in such manner with the upperas that the former will clear off the plates mof the 4.. The use of the clearer-bar T, in combination with the cylinderB and its platesm, the whole arranged and operating as specified, for the purpose set forth.

5. The combination of the two cutter-cylinders, one over or in advance ofthe other when each is made withspiral knives and the knives of the two are twisted in oppositedirections, as and for the purposes set forth.

In testimony whereofwe have hereuntoset our hands and seals.

FREDERICK MILLER. L. s. J N. McINTIRE. L. s.

tire:

M M. H. BIsHoP,

J. J. NEAGLE.

Witnesses to'the signature of. JAN."McIrn 

